The Samsung DA47-00424L is an indispensable part inside the Samsung refrigerator, intended to safeguard against frost accumulation in the freezer compartment. This necessary heating component is positioned inside the freezer so that it will automatically turn on during the thaw phase.This ensures effective cooling and avoids ice accumulation, which could impede airflow and affect food preservation. A malfunctioning defrost heater may cause a number of issues. Excessively thick layers of frost can eat up freezer space, obstruct ventilation, and make the refrigerator work harder to keep the temperature at the right level, which uses more energy. In extreme circumstances, extended exposure to frost from a broken defrost heater can even harm the evaporator coils.